Insoluble Amphiphiles at the Air/Water Interface. The Characteristics of Alcohols Monolayers

• Autorzy: Wydro P. , Hąc-Wydro K. , Paluch M.
• Języki publikacji: EN

Abstrakty

EN

In this paper thorough characteristics of monolayers formed at the air/water interface by two alcohols namely hexadecanol and octadecanol has been presented. The experiments were based on surface pressure/area and surface potential measurements. The visualization of monolayers has been performed using Brewster Angle Microscopy. It has been found that both alcohols form at the air/water interface condensed monolayers with transition between liquid condensed (LC) and solid (S) state. From the experimental results the thickness of monolayers has been calculated and compared with theoretical value. These calculations allow drawing conclusion of the slope of the hydrocarbon tails of investigated alcohols in monolayers. From the surface potential measurements the conformation of the O–H bond and the orientation of dipolemoments of both alcohols have been proposed. Moreover, the stability of monolayers formed by investigated alcohols has been studied and it has been found lower stability of hexadecanol monolayers in comparison with those formed by octadecanol.

Słowa kluczowe

EN

insoluble monolayers; surface potential; Brewster angle microscopy; relative reflectivity

• Wydawca: Polskie Towarzystwo Chemiczne
• Czasopismo: Polish Journal of Chemistry
• Rocznik: 2006
• Tom: Vol. 80, nr 12
• Strony: 2041--2054
• Opis fizyczny: Bibliogr. 27 poz. rys.

Twórcy

autor

Wydro P.

autor

Hąc-Wydro K.

autor

Paluch M.

• Department of Physical Chemistry and Electrochemistry, Faculty of Chemistry, Jagiellonian University, Ingardena 3, 30-060 Kraków, Poland

Bibliografia

• 1. Gaines Jr, G.L., Insoluble Monolayers at Liquid-Gas Interface, John Wiley and Sons, Inc., New York 1966.
• 2. Adam N.K., Physics and Chemistry of Surfaces, Oxford Press, London, 1941.
• 3. Harkins W.D., The Physical State of Surface Films, Reinhold Publishing Co., New York, 1954.
• 4. MacRitchie F., Chemistry at Interfaces, Academic Press, Inc., London 1990.
• 5. Kaganer V.M, Möhwald H. and Dutta P., Rev. Modern Phys., 71, 779 (1999).
• 6. Davies J.T. and Rideal E.K., Interfacial Phenomena, Academic Press, New York and London, 1963.
• 7. Dynarowicz-Łątka R, Dhanabalan A. and Oliveira Jr., O.N., Adv. Colloid Interface Sci., 91,221 (2002).
• 8. Henon S. and Meunier J., Rev. Sci. Instrum., 62, 936 (1991).
• 9. Honig D. and Mobius D., J. Phys. Chem., 95, 4590 (1991).
• 10. Vollhardt D., Adv. Colloid Interface Sci., 64, 143 (1996).
• 11. Rodriguez Patino J.M., Carrera Sanchez C. and Rosario Rodriguez Nino M., Langmuir, 15,2484 (1999).
• 12. Azzam R.M., and Bashara N.M., Ellipsometry and Polarised Light, North-Holland, Amsterdam, 1992.
• 13. de Mul M.N.G. and Mann Jr., J.A., Langmuir, 14, 2455 (1998).
• 14. Rodriguez Patino J.M., SanchezC.C. and Rodriguez Ni no M. R., Food Hydrocolloids, 13,401 (1999).
• 15. Tanford C., The Hydrophobic Effect. The Formation of Micelles and Biological Membranes, 2nd ed.;Wiley: New York, 1980.
• 16. Hiemenz P. and Rajagopalan R., Principles of Colloid and Surface Chemistry, 3rd ed.; M. Dekker: New York, 1997.
• 17. Israelachvili J.N., Intermolecular and Surface Forces, 2nd ed.; Academic Press: London, 1992.
• 18. Schulman J.H. and Rideal E.K., Proc. R. Soc. London A, 130, 229 (1931).
• 19. HyperChem Professional Release 5.1., A Molecular Visualization and Simulation Software Package; Hypercube Inc., Gainesville, FL, 1998.
• 20. De la Fuente Feria J. and Rodriguez Patino J.M., Langmuir, 10, 2317 (1994).
• 21. Smith R.D. and Berg J.C., J. Colloid Interface Sci., 74, 273 (1980).
• 22. Pezron E., Claerson P.M., Berg H.M. and Vollhardt D., J. Colloid Interface Sci., 138, 245 (1990).
• 23. Carrera Sanchez C., Rodriguez Nino M.R. and Rodriguez Patino J.M., Colloids Surf., B, 12,175 (1999).
• 24. Retter U. and Yollhardt D., Langmuir, 8, 1693 (1992).
• 25. Vollhardt D., Colloids Surf., A, 143, 185 (1998).
• 26. Ter Minassian-Saraga L., J. Colloid Interface Sci., 11, 398 (1956).
• 27. Myrick S.H. and Franses E.I., Colloids Surf., A, 143, 503 (1998).